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United States Patent | 5,559,319 |
Peng | September 24, 1996 |
A number of scanning devices are shown which are suitable for use in active or passive bar code readers. These devices use a mirror system which is arranged to oscillate for production of a scanning beam, the oscillation being at a resonant frequency and being effected and adjusted by means solely of magnetic or electro magnetic components.
Inventors: | Peng; Ke-Ou (2612 kv. Delft, NL) |
Assignee: | Opticon Sensors Europe BV (NL) |
Appl. No.: | 361481 |
Filed: | December 22, 1994 |
Dec 24, 1993[GB] | 9326471 | |
Jan 20, 1994[GB] | 9401042 |
Current U.S. Class: | 235/462.36; 359/199; 359/213 |
Intern'l Class: | G06K 007/10 |
Field of Search: | 235/462,472,470 359/199,213,214 |
5015831 | May., 1991 | Eastman et al. | 235/462. |
5136415 | Aug., 1992 | Bean | 359/213. |
5281801 | Jan., 1994 | Shepard et al. | 235/462. |